Nov 27, 2012 1:40am PST
on file. here's john boehner's pledge signed 20 years ago. >> reporter: if somebody signed this, 10, 18, 20 years ago are they still bound by it? >> now when you got married, did your wife understand there was an expiration date on the promise? when you borrowed money for your house, did they extend -- oh, geez, that mortgage? that was ten years ago. you're still asking me for money? if you make a commitment, you make a commitment. >> reporter: the pledge is the biggest obstacle to any deal that would raise taxes. with a budget crisis on the horizon and re-elected president insisting on tax increases, some republicans are thinking the unthinkable. ditching the pledge. >> i will violate the pledge, long story short, for the good of the country. >> i am not obligated on the pledge. >> the world has changed and the economic situation is different. >> reporter: and while virtually every republican in the past signed it, nearly a third of the newly elected house republicans refused to sign it this time. republicans ditching the pledge could be a big step toward a deal with the president.